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+ servings
Four peanut butter oatmeal cookies stacked
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5 from 5 votes

Peanut Butter Oatmeal Cookies

These peanut butter oatmeal cookies are ultra thick, chewy and packed with rich, peanut butter flavor! Bonus: these are gluten free!
Prep Time10 mins
Cook Time15 mins
Total Time25 mins
Course: Dessert
Cuisine: American
Keyword: easy, gluten free, peanut butter, sweet
Servings: 14 large cookies
Calories: 385kcal
Author: Jennifer Debth


  • 1/2  cup  unsalted butter room temperature
  • 1 cup creamy peanut butter
  • 3/4  cup  dark brown sugar packed
  • tablespoon  vanilla extract
  • large egg room temperature
  • 1 1/4  cups  ground old fashioned oats *
  • 1 1/2  cups  old fashioned oats left whole
  • 1/2  teaspoon  baking soda
  • 1/2  teaspoon  salt
  • 1/2  cup  peanut butter chips plus more for topping if desired
  • Maldon sea salt optional for topping


  • Preheat oven to 350 degrees F and line 2 baking sheets with silicone mats.
  • Using a hand mixer, beat butter, peanut butter, and brown sugar together in a large bowl until fluffy, about 2 minutes.
  • Beat in vanilla and egg.
  • Beat in ground oats, whole oats, baking soda, and salt. Mix until well combined.
  • Beat in peanut butter chips.
  • Using a 1/4 cup measuring cup, pack dough into the 1/4 cup and turn out dough onto prepared baking sheet - no more than 6 cookies on each baking sheet. Flatten out slightly with a fork like you would a peanut butter cookie.
  • Bake one sheet of cookies in preheated oven until golden brown, about 15 minutes.
  • Remove from oven and sprinkle with Maldon sea salt, if desired, then let cookies sit for 5 minutes.
  • Transfer to a wire cooling rack to let finish cooling or eat immediately!
  • Repeat with remaining dough.
  • Store leftovers in an airtight container at room temperature.
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*Make ground oats by placing about 2 cups old fashioned oats in your food processor. Grind until the oats resemble flour. Measure out 1 and 1/4 cups ground oats and resume with recipe!


Serving: 1large cookie | Calories: 385kcal | Carbohydrates: 40g | Protein: 11g | Fat: 21g | Saturated Fat: 8g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 1g | Cholesterol: 31mg | Sodium: 231mg | Potassium: 221mg | Fiber: 5g | Sugar: 18g | Vitamin A: 15IU | Calcium: 32mg | Iron: 1.5mg